The primary cycloadducts from 2-phenylbenzazete (1) and diarylnitrile imines (2) rearrange spontaneously to 1,2,4-triarylbenzo[f]-1,3,5-triazepines (5); the isolable but labile adduct from the azete (1) and diazomethane is transformed into the azidostyrene (8) thermally, and into a mixture of 2- and 3-phenylindoles and the ketone (11) in the presence of acidic catalysts.
P. W. Manley, R. Somanathan, D. L. R. Reeves and R. C. Storr, J. Chem. Soc., Chem. Commun., 1978, 396 DOI: 10.1039/C39780000396
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